At least 65 people, including children, have been injured in a Russian missile attack on the Ukrainian city of Sumy, local officials say

Explosions were heard in the city centre, as "children's establishments", homes and a hospital have been damaged, according to Sumy's regional head

In Riyadh, Saudi Arabia, talks between US and Russian officials on a possible truce in the Ukraine war are under way - with a focus on a Black Sea deal

Ukraine's defence minister says separate Kyiv-Washington discussions on Sunday were "productive"

As crucial talks continue, US tries to live up to optimistic expectations, writes BBC's security correspondent Frank Gardner